Radiator or heating-drum



(No Model.) 2 Sheets-Sheet 1.

D. S. RICHARDSON.

RADIATOR 0R HEATING DRUM.

No. 361,321. Fig [Patented Apr. 19,1887.

WITNESSES (No'ModeL) 2 Sheets-Sheet 2.

I D. s. RICHARDSON.

RADIATOR 0R HEATING DRUM.

N0. 361,321. Patented Apr; 19, 1887.

344,251 ss as UNITED STATES PATENT OFrIcE.

' DiVIGl-IT S. RICHARDSON, OF BROOKLYN, NE\V YORK.

RADIATOR 0R HEATING-DRUM.

SPECIFICATION forming part of Letters Patent No. 361,321, dated April 19, 1887.

Application filed October 1. l8c'3. Serial No. 107523. (.\'0 model.)

T0 aZ Z whom it may concern.-

Be it known that I, DWIGHT S. Rronnnnson,

a citizen of the United States, and a resident.

of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Heating-Drums or Radiators, of which the following is a full, clear, and exact description.

'llhc invention relates particularly to drums which are employed in connection with the combustion-chambers of hot-air furnaces';'but

my improvements may be applied to heatingdrums which are to be used in other connections. r

In United States Patent No. 272,326, issued tome February 13, 1883, is shown a drum the walls of which are cast in one continuous piece of metal, the space inclosed therein being divided horizontally by a,diaphragm, two fines being thus formed for the passage of the products of combustion, the object of the construction being to impart to the ascending currents a zigzag course, first toward the front and then toward the rear of the drum, so as to insure thorough utilization of the heat which is contained in such products. In United States Patent No. 279,666, issued to me J une-'19, 1883, the same general characteristics are embodied; but the top andsides only of the drum are of one continuous casting, the bottom being a separate and distinct plate or sheet attached to the walls at their base in any suit-: able manner, and provision is made for either casting the diaphragm with the walls or for its separate formation and subsequent attachment thereto. These constructions combine various advantages, and in their perfect utilization of the heat contained in the products.

- of combustion and in their prevention of the escape of deleterious gases from the drum into the surrounding hot-air chamber they give satisfactory results. It has been found, however, that under certain circumstances different porti'onslof the walls of thedrum expand and conas those hereinbefore describe tract unequally, sometimes causing 'i'racture of some one of the parts, to the consequent detriment .of the purity of the contents of the air-chamber, and to avoid this I have devised this invention, which consists in constructing a drum which, while of the same generalform is constituted of two horizontal sections, one of which rests loosely upon the other, the diaphragm being placed in-the same relation to the upper and lower portions of the drum as before-that is, at about its mid-height.

' In the drawings, Figure 1 represents in vertitical section a drum of the described character, in which is shown a groove or packingreceptacle' formed withthe lower sectionof the drum, the diaphragm restingloosely upon the top of the inner wall of the cap, which constitutes, also, the upper extremity of such lower section. Fig. 2 shows a similar construction, the diaphragm having defy nding or flanged edges, which rest in the receptacle inside the lower extremity of the upper section. Fig. 3 is a. vertical longitudinal centralcscction show ing the adaptation of the radiator for use in connection with oneform of heating-furnace, the diaphragm being arranged as represented in Fig. 2. W

It will be seenthat under this construction all the parts are loosely fitted together, and are free to expand andto contract without danger of fracture or strain.

In Figs. 4, 5, and 6, each a vertical section, are represented modifications of the abovedescribed construction, Fig. 4 showing the receptacle formed as in Fig. 1, and having a diaphragnrcast integral with the upper section of thedrum; Fig. 5 showing the receptacle as in Fig. 1, but with the diaphragm forming an inseparable portion of the lower section, and Fig. 6 showing a two-plate or double diaphragm, one plate being cast with the walls and extending across the lower extremity of the upper section, and the other plate being cast with-the walls and extending across the upper extremity of the lower section of the drum. 1 do notherein claim these modified forms of construction, but I reserve the right to make a separate application for-a patent therefor.

In all'the figures A is theupper section, and Bis the lower section, of the drum; 0 is the packing-receptacle,

and D is'ithe diaphragm;

edges ofjhe diaphragm, formiiig flanges which,

- in common withthe edge of the upper section,

rest within the packing-receptacle.

- It will be understood, although it is not material to thepoi nts of novelty herein presented, that an orifice is provided in thediaphragm in each of these representations, so that the sists of twodistinctseetions, one of which rests circulation of the products through the drum lsrfirst from any suitable fire-chamber or other sohrce of heat below theilrum into the lower flue. of the same, and from the lower flue through an orifice in the diaphragm into the upper flue, through which they pass to the exit-opening, the same as in the patents heremahove referred to.

th heating-drum composed of two distinct sections, the upper resting in a sand-joint upon the lower, has before been made.

My construction combines the advantages of the loosejointwith those of the diaphragm, which converts the drum-chamber into two horizontal ilues.

All or either of the parts may be of either loosely upon the other, and a diaphragm which is placed at or near thepoint-ofjunction of the two sections and which divides the same into two parallel horizontal fines.

2. In a radiator or heating-drum, the combination of an upper section, a lower section, and an indcpendentdiaphragm which islooscly placed at or near the point of junction of the t '0 sections and which divides the same into two lines.

8. In a radiator or heating-drum, the combination of a lower section which is provided with a paelririg-receptacle, an upper section which is adapted to rcstin the packing-receptacle, and an inde n-mlent diaphragm which is also adapted torcst in the pi1cl iug-reccpta- 4o iast, wrought, or sheet metal. the former, clc.

owever, being ordinarily employed. 1' .l" Having" thus described my lllYOllilOlL what I 1 l \ILI b0\ desire to claim, and seen re by Letters Patent, t \VitllLSSOSI 1s HENRY T. l-licii.li:n.-so.\',

' 1. A radiator or heating-drum which con- 

